Formed orifice plate for ink jet printing apparatus
CA 1105771 A · Owner: The Mead Corporation · Inventors: Spyrou, Elias; Paranjpe, Suresh C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Docket 6461, FORMED ORIFICE PLATE FOR, INK JET PRINTING APPARATUS Abstract of the Disclosure, A formed orifice plate for use in an ink jet printing device is provided in which the orifice plate and the side walls of the liquid reservoir formed above the orifice plate to supply ink to the orifices are of, unitary construction and formed from a thin sheet of material. The side walls are backed by a member in order to prevent propagation of spurious vibrations from the orifice plate along the side walls and into the liquid contained in the reservoir. An alternative construction of unitary orifice plate is also provided in which the orifice plate has a generally W-shaped cross section and …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted July 28, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 28, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.